#include <stdlib.h>

int* array_init (int N){

  int *iarray;
  int i;

  // enter your code here:
  // 1. allocate memory for an array of size N
  // 2. fill this array with values from 1 to N


  return iarray;

}

float mean ( int N, int *array ){

  int sum;

  // enter your code here
  // calculate the sum of all elements in the input array

  return sum * 1.0 / N;

}